TestDoubleIterator.java :  » Library » Apache-commons-primitives-1.0 » org » apache » commons » collections » primitives » Java Open Source

/*
 * $Header: /home/cvs/jakarta-commons/primitives/src/test/org/apache/commons/collections/primitives/TestDoubleIterator.java,v 1.1 2003/10/13 22:46:55 scolebourne Exp $
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package org.apache.commons.collections.primitives;

import java.util.Iterator;
import java.util.NoSuchElementException;

import org.apache.commons.collections.iterators.AbstractTestIterator;
import org.apache.commons.collections.primitives.adapters.DoubleIteratorIterator;

/**
 * @version $Revision: 1.1 $ $Date: 2003/10/13 22:46:55 $
 * @author Rodney Waldhoff
 */
public abstract class TestDoubleIterator extends AbstractTestIterator {

    // conventional
    // ------------------------------------------------------------------------

    public TestDoubleIterator(String testName) {
        super(testName);
    }

    // collections testing framework
    // ------------------------------------------------------------------------

    public Iterator makeEmptyIterator() {
        return DoubleIteratorIterator.wrap(makeEmptyDoubleIterator());
    }

    public Iterator makeFullIterator() {
        return DoubleIteratorIterator.wrap(makeFullDoubleIterator());
    }


    protected abstract DoubleIterator makeEmptyDoubleIterator();
    protected abstract DoubleIterator makeFullDoubleIterator();
    protected abstract double[] getFullElements();

    // tests
    // ------------------------------------------------------------------------
    
    public void testNextHasNextRemove() {
        double[] elements = getFullElements();
        DoubleIterator iter = makeFullDoubleIterator();
        for(int i=0;i<elements.length;i++) {
            assertTrue(iter.hasNext());
            assertEquals(elements[i],iter.next(),0f);
            if(supportsRemove()) {
                iter.remove();
            }
        }        
        assertTrue(! iter.hasNext() );
    }

    public void testEmptyDoubleIterator() {
        assertTrue( ! makeEmptyDoubleIterator().hasNext() );
        try {
            makeEmptyDoubleIterator().next();
            fail("Expected NoSuchElementException");
        } catch(NoSuchElementException e) {
            // expected
        }
        if(supportsRemove()) {
            try {
                makeEmptyDoubleIterator().remove();
                fail("Expected IllegalStateException");
            } catch(IllegalStateException e) {
                // expected
            }
        }        
    }

    public void testRemoveBeforeNext() {
        if(supportsRemove()) {
            try {
                makeFullDoubleIterator().remove();
                fail("Expected IllegalStateException");
            } catch(IllegalStateException e) {
                // expected
            }
        }        
    }

    public void testRemoveAfterRemove() {
        if(supportsRemove()) {
            DoubleIterator iter = makeFullDoubleIterator();
            iter.next();
            iter.remove();
            try {
                iter.remove();
                fail("Expected IllegalStateException");
            } catch(IllegalStateException e) {
                // expected
            }
        }        
    }
}